MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Symmetric Ciphers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following represent the tweak? |
| A. | j |
| B. | i |
| C. | alpha |
| D. | alpha<sup>j</sup> |
| Answer» C. alpha | |
| 2. |
What is the size of the XTS-AES key? |
| A. | 1024 bits |
| B. | 64 bits |
| C. | 512 bits |
| D. | 128 bits |
| Answer» D. 128 bits | |
| 3. |
XTS-AES mode of operation is a better version of |
| A. | OFB |
| B. | CFB |
| C. | CTR |
| D. | ECB |
| Answer» E. | |
| 4. |
A tweak is used in XTS-AES mode to provide a different output for the same input PT and same key. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The purpose of a tweak in XTS-AES mode is to |
| A. | secure the public key |
| B. | provide security |
| C. | provide variability |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 6. |
Which mode of operation has the worst error propagation among the following? |
| A. | OFB |
| B. | CFB |
| C. | CBC |
| D. | ECB |
| Answer» E. | |